Quadruple four-cycle explosive-engine.



. r I PATENTBD MAY 24, 1904; F. B.'SGHOONMAKER.

QUADRUPLE POUR-CYCLE EXPLOSIVE ENGINB.

APPLICATION FILED 00w. 8, 1903.

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UN T D STATES Patented may 24, 1904.

PATENT Omeng FRANK EDWARD scHooNMAKER, or ADRIAN, MICHIGAN.

QUADRUPLE FOUR-CYCLE EXPLOSIVQE-ENFGINE.

SPEGIFI CATI ON'forming as of Letters Patent No. 760,649, dated 1VIay24,f1904.

Application filed October 3,1903.

I aZZ whom it may concern:

Be it known that I, FRANK EDWARD Sorroo'N- MAKER, a' citizen of the United States, residing at Adrian, in the county of Lenawee and State T of Michigan, haveinvented certain new anduseful Improvements in QuadrupleFour-Cycle Explosive Engines or Motors, of which the following is a specification.

' engines.

' cured in position inanydesira-ble manner.'

V This invention relatesto explosive engines or motors, and more particularly to that class I known as quadruple four-cycle explosive The object of my invention is to provide a quadruple four-cycle explosive engine or motor consisting of two parallelcylinders cast in one piece and bored in'the usual manner, the

cylinders being provided-at each end with wa-. 1

tor-jacketed cylinder-heads adapted to be seconnected by driving-rods tothe crank-shaft.

Another object of my invention is to pro Vide an engine or motor of the character above described and to construct the same with butfew parts, all of which will efliciently perform their intended functions. I I With these objects in view and such others as may hereinafter appear my invention consists in the particular construction of'the various parts and in the novel manner of com-. bination and arrangement of said parts, allof which will be fully described, and specifically pointed out in the appended claims;

In the drawings forming a part of this specification, Figure 1 is a longitudinal section cenplate.

trally through the cylinders, parts being left in elevation; Fig. 2 isa plan view of the bed Fig. 3 is a longitudinal section of the same. Fig. 4 is a sectional view of one of the pistons. Fig. 5 is a, sectional View taken at right angles'to Fig. 4. Fig.6 is a cross-sectional View of the same, taken through the uniseria nalvalso. (Nomodeh) I versal ball-joint with the wrist-pin removed.

Fig. 7 is a cross-sectional View of the retainingplug for securing the ball in posit-ion. Fig. 8 is atop plan View of the'same.

Referring by numerals to the drawings, 1 represents the bed-plate, consisting of'a substantially pan shaped casting-having standards 2, 3, 4, and 5, connectedand braced by lineal andtransverse Webs 6 and 7. Thelineal webs 6 project over one end of the bed-"plate, so as to form braces for the hangers 8, and the transverse webs project over the sides, soas to form braces for the hangers 9. These hangers may be of any desirable construction found suitable for supporting the bed-plate andengine to be mounted thereupon. This bedplate is further provided with two sets of oppositely-disposed bosses 10 and 11 and two sets of pedestals 12 and 13, provided withjournalboxes 14 and 15, the object of which will be hereinafter explained.

The main body of the engine is-mount'ed upon the standards 2,3, ,4, and 5. It consists of one casting having two parallel elongated cylinders therein, with a suitable water jacket or chamber. 16 surrounding them at each end and connected above and below, as shown at 17 and 18. These elongated cylinders are slotted, as shown at 19, thus forming. four separate and distinct cylinders, (designated, re-

spectively, as 20, 21,22, and 23.). Secured upon each end of the casting and registering with the cylinders are water-jacketed cylinder-heads 24 and 25, carrying inletfand exhaust valves, (designated as 26, 27 28,29, 30,

31,32, and 33,) which are "constructed substantially as shown and operated in a manner to be hereinafter explained. I

Mounted in the cylinders are two doubleheaded. pistons 34 and 35, each of which is provided in its center with a solid portion 36,

bracedby webs 37 and 38. Th'ese solid portions are apertured, as shown at 39, to'receive a ball 40, which is held. in position by a retaining plug 41, having. tapering lockingscrews 42. The balls 40 are aperturedQ'as shown at 43, to receive the continuous wristpin 44, the ends of which project through andbeyond the oppositely-disposed slots 19 and are connected by driving-rods L5 to the crankpins 46, mounted on the disks 4:7 on the crankshaft 48, the crank-shaft 48 being journaled in the bearings 14: on the pedestals 12 and provided with a gear 49, which meshes with a gear 50 upon the shaft 51, from which power is transmitted, the shaft 51 being mounted in journals upon the pedestals 14. It is to be understood that the continuous wrist-pin has no bearing upon the walls formed by the slots, nor does. said slot act as a guide therefor, but is merely provided to allow the wrist-pin a reciprocating movement. It is also to be noted that the wrist-pin is not keyed or otherwise rigidly secured to the pistons, the object being to prevent binding or jamming.

Mounted upon the crank shaft -et8 is a sprocket 52, connected by a belt 53 to a sprocket 54:, mounted upon the shaft 55, which is'journaled in bearings upon the bosses 11 and provided with a beveled pinion 56, which meshes with a beveled pinion 57 upon the shaft 58. The shaft 58 is provided with another beveled pinion 59, which meshes with a beveled pinion 60 upon the shaft 61, which is journaled in bearings on the bosses 10. The shafts 55 and 61 each carry a' series of four valve-operating levers.

It is to be understood that gasolene may be admitted to the cylinders in any desirable manner, and any desired form of a sparker may be employed.

Assuming a compressed charge in the cylinder 22, upon the explosion thereof the pistons are driven into the cylinders and 21, at the same time drawing an explosive charge through the inlet-valve'3l into the cylinder 23 and discharging the burned charge from the cylind or 21 through the exhaust-valve 29, also compressing the charge in the cylinder 20. At the end of this stroke or the completion of the first cycle of the engine the charge in the cylinder 20 is exploded, thus driving the pistons back into the cylinders 22 and 23, thereby compressing the charge in the cylinder 23 drawn in by the preceding stroke, discharging the burned charge in the cylinder 22 through the exhaust-valve 33, drawing a charge through the inlet-valve 28 into the cylinder 21, thus completing the second stroke or second cycle. The charge in the cylinder 23 is then exploded and drives the pistons again into the cylinders 20 and 21 at the same time, exhausting the burned charge in the cylinder 20 through the exhaust-valve 26, drawing a fresh charge through the inlet-valve 32 into the cylinder 22 and compressing the charge in the cylinder 21, thus completing the third cycle. The compressed charge in the cylinder 21 is then exploded and drives the pistons back into the cylinders 22 and 23, exhausting the burned charge in the cylinder 23 through the exhaust-valve 30, compressing the charge in the cylinder 22, drawing a charge through the inlet-valve 27 into the cylinder 20, thus completing the fourth cycle and producing two revolutions of the crank-shaft with an explosion at every half-revolution.

Having thus described the various features of my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a quadruple four-cycle explosive-engine, the combination of two parallel cylinders slotted at their centers, double-headed pistons mounted in the said cylinders, a continuous wrist-pin connected to each piston by a universal ball-joint, driving-rods connecting the ends of the wrist-pin to the crank-shaft, substantially as described.

2. In a quadruple four-cycle explosive-engine, the combination of two parallel cylinders, the said cylinders being water-jacketed and slotted at their centers, double-headed pistons mounted in the said cylinders, a solid portion in the center of each piston, the said solid portion being apertured, a ball adapted to lit snugly in said aperture, means for retaining the ball in position, an aperture in the ball, a wrist-pin passing through the apertures in the said balls and pistons, the ends of the wrist-pin projecting through the slots in the cylinders and connected by driving-rods to the crank-shaft, substantially as described.

3. In a quadruple four-cycle explosive-engine, the combination of a substantially panshaped bed-plate having a series of standards connected and braced by lineal and transverse webs, oppositely -disposed pedestals formed upon one end of the bed-plate, one casting comprising two parallel cylinders mounted upon the standards, the said cylinders being water-jacketed and slotted at their centers, hollow double-headed pistons mounted in said cylinders, a solid portion in the center of each .piston, apertures in the said solid portions, a continuous wrist-pin passed through the apertures in the said solid portions, and connected to the said pistons by universal joints, and driving-rods connecting the ends of the wrist-pin to the crank-shaft, said crank-shaft being mounted in journals upon the said pedestals, substantially as described.

4. In a quadruple four-cycle explosive engine or motor, the combination of a substantially pan-shaped bed-plate having a series of standards and hangers, each connected and braced by lineal and transverse webs, oppositely-disposed pedestals formed upon one end of the said bed-plate, one casting comprising two parallel elongated cylinders mounted upon the standards, the said cylinders being water-jacketed and slotted at their centers, hollow double-headed pistons mounted in the cylinders, the said pistons havinga solid percrank-shaft being mounted in journals upon the oppositely-disposed pedestals, substantially as shown and for the purposeset forth.

FRANK EDWARD SCHOONMAKER.

Witnesses:

'OWEN H. FOWLER, WALTER S. WESTERMAN. 

